文献类型：期刊文献

英文题名：Improving the durability and investing failure behavior of TBCs under thermal cycling-CMAS test by Yb2O3 and Y2O3 co-stabilized ZrO2 materials and different processes

作者：Liu, Yangguang[1];Zhang, Wenkang[1];Wang, Weize[1,2];Liu, Wei[1];Yang, Ting[1];Li, Kaibin[1];Zhang, Xiaoqin[1];Wang, Junhao[1];Zhao, Xiaofeng[3];Luo, Lirong[3];Yang, Jin[4];Zhang, Chengcheng[5]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China;[2]Shanghai Inst Aircraft Mech & Control, Shanghai 200237, Peoples R China;[3]Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Adv High Temp Mat & Precis Formin, Shanghai 200240, Peoples R China;[4]Shanghai Inst Satellite Engn, Shanghai 201109, Peoples R China;[5]AECC Commercial Aircraft Engine Co Ltd, Shanghai 200241, Peoples R China

年份：2024

卷号：50

期号：23

起止页码：49095

外文期刊名：CERAMICS INTERNATIONAL

收录：;EI(收录号：20244317241430);WOS:【SCI-EXPANDED(收录号:WOS:001396190400001)】；

基金：This research was sponsored by National High Technology Research and Development Program of China (2023YFB3711200) , the National Natural Science Foundation of China (52175136, 52130511) , Science Center for Gas Turbine Project (P2021-A-IV-002) , Shanghai Joint Innovation Program in the Field of Commercial Aviation Engines, Shanghai Gaofeng Project for University Academic Program Development, and Key Research and Development Projects in Anhui Province (2022a05020004) .

语种：英文

外文关键词：Thermal barrier coatings; Multi-layer coating; Computational model; Bond strength; Thermal cycling-CMAS lifetime

摘要：Under extremely complex conditions, extending the lifetime of thermal barrier coatings (TBCs) is a challenge. In the present study, optimization of the coating structure and selection of coating materials are beneficial for improving the lifetime of TBCs under thermal cycling-CMAS (calcium-magnesium-alumina-silicate) test. It is efficient to obtain different layer thicknesses of multi-layer coating, including the micro-nano dual-scale layer, the dense YbYSZ layer (4.0 mol % Yb2O3 and 0.5 mol% Y2O3 co-stabilized ZrO2), the porous YbYSZ layer and the laser 3D texturing layer, using the computational model under thermal load. Based on the corresponding coating structure and YbYSZ material, bond strength and thermal cycling-CMAS lifetime are evaluated, and compared with those of YSZ (4.5 mol % Y2O3 stabilized ZrO2) coating. The results reveal that TBCs with porous embedded particle cluster (PEPC) structure is lower than that of YSZ coating. In addition, the original defects in multi-layer coating with grid texture reduce the bond strength. The lifetime of multi-layer coatings with a punctate texture are significantly improved in the thermal cycling-CMAS test, and their failure behavior includes fragmented and bulk-like exfoliation. This study emphasizes that combination of materials modification and structure optimization are a promising strategy to extend lifetime of TBCs.